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Gasification of high ash India coal has been studied in a laboratory‐scale, atmospheric fluidized bed gasifier using steam and air as fluidizing media. A one‐dimensional analysis of the gasification process has been presented incorporating a two‐phase theory of fluidization, char gasification, volatile release and an overall system energy balance. Results are presented on the variation of product gas composiiton, bed temperature, calorific value and carbon conversion with oxygen and steam feed. Comparison between predicted and experimental data has been presented, and the predictions show similar trends as in the experiments.

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